Formal:
* Alternatively
* Otherwise
* Or else
* In the alternative
* On the other hand
* As an alternative
* Either...or
* One or the other
Informal:
* Or else (more casual)
* Or so
* And/or
* Rather
* Instead
* But (in some contexts)
Specific Contexts:
* For example: If "or" is used to list possibilities, you can use "for example" or "such as" to introduce the alternatives.
* To clarify: If "or" is used to explain a choice, you can use phrases like "in other words" or "to put it another way."
Examples:
* Original: "Do you want tea or coffee?"
* Formal: "Would you prefer tea, or perhaps coffee?"
* Informal: "Tea or coffee?"
* Specific: "Would you like a hot beverage, such as tea or coffee?"
Important Note: The best way to rephrase "or" depends entirely on the specific context and the tone you want to achieve. Consider the formality of the situation and the desired level of precision when choosing your alternative.